Infraction: 1. All posters are to make an effort to communicate clearly.
Message to User:
While I understand that English is most likely not your native language, this post is insufficiently clear to meet forum guidelines. Consider using one of the built-in browser spell checkers available in Firefox, Chrome, and other web browsers. Additionally, replace "boos" with "boss."
The heart of XT was shredable all the time we spent on this boos - for me. Also there are not mechanics, which should force boos to turn back... maybe black hole pulled MT before droping heart. If BliZz didnt chaged this encounter from our kill, you should be abble to run around and find shredable position. But as I reported, if you are staying behind boos all the possible time, you should be able from this position shred heart all the time it drops.
For Kologarn, Im prety sure, there are no position for using shred. The boos is unchargable for warr - I didnt tryed, but it should be unchargable for feral cat. Very probably, because his back is not accesable. I just have to spam mangle (not improved) and pushed 5300 DPS, was second in or guild, behind shadow priest, who was abble to AoE arm elementals. I dont know, how much you lose by mangling. I did 200 more DPS on Ignis without being potted (no haste), but its hard to compare, because Ignis is retaded still turning boos.
On Kologarn, there is also interesting to AoE both arms and boos. Just buff the SR and spam swipe. I didnt tryed... just interested in how much DPS provide swiping 3 targets?